CN107434971A - A kind of water injection well Swelling-resistant shrinking and swelling agent and its preparation method and application - Google Patents
A kind of water injection well Swelling-resistant shrinking and swelling agent and its preparation method and application Download PDFInfo
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- CN107434971A CN107434971A CN201610364965.8A CN201610364965A CN107434971A CN 107434971 A CN107434971 A CN 107434971A CN 201610364965 A CN201610364965 A CN 201610364965A CN 107434971 A CN107434971 A CN 107434971A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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Abstract
The invention discloses a kind of water injection well Swelling-resistant shrinking and swelling agent and its preparation method and application, belong to oil field reinjection water field.The water injection well Swelling-resistant shrinking and swelling agent includes the component of following mass percent：Hydroxypropyl trimethylammonium based quaternary ammonium salt 6.8% 12.7%, potassium chloride 6.8% 12.7%, surplus is water.Wherein, the chemical structural formula of hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Description
Technical field
The present invention relates to oil field reinjection water field, more particularly to a kind of water injection well Swelling-resistant shrinking and swelling agent and preparation method thereof and should
With.
Background technology
In oil extraction process, hydration swelling easily occurs for the clay mineral in oil reservoir, the clay particle after hydration swelling
Between hole reduce, and hole that is scattered and being moved between clay particle easily occurs for clay particle after hydration swelling
It is interior, therefore cause the permeability decrease of oil reservoir, water injection pressure rises, and the recovery ratio of crude oil reduces.At present, through frequently with anti-swollen contracting
Swollen dose is stablized the volume of clay particle in oil reservoir.Swelling-resistant shrinking and swelling agent is usually cationic compound, and its cation group is in acid
Property under the conditions of there is oxidisability, can loosen the lattice of the clay particle of the water containing absorption, the adsorbed hydrone of abjection, and then make
The volume contraction of clay particle after hydration swelling.And the hydration capability of the cation of Swelling-resistant shrinking and swelling agent be less than water in monovalence,
The hydration capability of divalent inorganic cations, it can be adsorbed prior to inorganic cation on clay particle, promote clay particle to deviate from
Intermediary water, and then clay particle is formed fine and close lattice structure, it is suppressed that the hydration swelling of clay particle.As can be seen here, carry
It is very necessary for a kind of Swelling-resistant shrinking and swelling agent that can make the volume-diminished of the clay particle of hydration swelling in oil reservoir.
Prior art provides a kind of Swelling-resistant shrinking and swelling agent, and the Swelling-resistant shrinking and swelling agent is in part by weight：Water 30-40
Part, dimethyl diallyl ammonium chloride 20-30 parts, polyethylene polyamine 10-15 parts, ammonium persulfate 0.1-0.2 parts, sodium sulfite
0.1-0.2 parts, sodium hypochlorite 14-25 parts, inorganic non-oxidizable middle strong acid 10-15 parts.The Swelling-resistant shrinking and swelling agent, which can play, makes oil
The volume-diminished of clay particle in layer, the permeability of oil reservoir is improved, improve the effect of the recovery ratio of crude oil.
Inventor has found that prior art at least has problems with：
The problems such as active area is small, and the term of validity is short, big to reservoir injury be present in the Swelling-resistant shrinking and swelling agent that prior art provides.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is, there is provided a kind of active area is big, term of validity length, to oil
Harmless water injection well Swelling-resistant shrinking and swelling agent of layer and its preparation method and application.Concrete technical scheme is as follows：
In a first aspect, the embodiments of the invention provide a kind of water injection well Swelling-resistant shrinking and swelling agent, the Swelling-resistant shrinking and swelling agent include with
The component of lower mass percent：Hydroxypropyl trimethylammonium based quaternary ammonium salt 6.8%-12.7%, potassium chloride 6.8%-12.7%, surplus are
Water.
Wherein, the chemical structural formula of the hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Specifically, preferably, the hydroxypropyl trimethylammonium based quaternary ammonium salt is prepared via a method which to obtain：
Step a, trimethylamine, hydrochloric acid are added in first reactor, carries out back flow reaction under agitation, cooling obtains
Trimethylamine hydrochloride.
Step b, the trimethylamine hydrochloride, trimethylamine, epoxychloropropane, n-amyl alcohol are added in second reactor,
Heating response under conditions of stirring, then reacted mixed solution is evaporated under reduced pressure, obtains the Hydroxyproyl Trimethyl
Quaternary ammonium salt.
Wherein, using mass percent to count, the 5%-15% trimethylamine is added in the first reactor,
15%-25% mass fraction is the 32%-43% hydrochloric acid.
The 20%-40% trimethylamine hydrochloride, the 5%-15% front three is added in the second reactor
Amine, the 5%-15% epoxychloropropane, the 40%-60% n-amyl alcohol.
Specifically, preferably, the time of the back flow reaction is 4-6h.
Specifically, preferably, the temperature of the heating response is 30 DEG C -60 DEG C, time 1.5-2.5h.
Specifically, preferably, the temperature of the heating response is 40 DEG C -50 DEG C, time 1.8h-2.2h.
Specifically, preferably, in the first reactor add 8.3%-10.5% the trimethylamine,
16.6%-21% mass fraction is 37% hydrochloric acid.
Specifically, preferably, adding the 24.9%-31.5% trimethylamine hydrochloric acid in the second reactor
Salt, the 8.3%-10.5% trimethylamine, the 8.3%-10.5% epoxychloropropane, described positive the penta of 45%-55%
Alcohol.
Second aspect, the embodiments of the invention provide the preparation method of above-mentioned water injection well Swelling-resistant shrinking and swelling agent, methods described bag
Include：Prepare hydroxypropyl trimethylammonium based quaternary ammonium salt；By mass percentage, the hydroxypropyl trimethylammonium based quaternary ammonium salt, potassium chloride are added into water
In, 15-30min is stirred, obtains the water injection well Swelling-resistant shrinking and swelling agent.
The third aspect, the embodiments of the invention provide above-mentioned water injection well Swelling-resistant shrinking and swelling agent in oil field extracted water reinjection technology
Application.
Specifically, preferably, when the quality of reinjected water is 100%, the matter of used water injection well Swelling-resistant shrinking and swelling agent
Measure as 1%-3%.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
Water injection well Swelling-resistant shrinking and swelling agent provided in an embodiment of the present invention, including the hydroxypropyl that mass percent is 6.8%-12.7%
Base trimethyl quaternary ammonium salt, 6.8%-12.7% potassium chloride, surplus are water.Wherein, the cation of hydroxypropyl trimethylammonium based quaternary ammonium salt
Group has oxidisability in oil reservoir, can loosen the lattice of the clay particle of the water containing absorption, the adsorbed hydrone of abjection, enters
And make the volume contraction of the clay particle after hydration swelling.And the water of the cation of hydroxypropyl trimethylammonium based quaternary ammonium salt and potassium chloride
Change ability is below monovalence in oil reservoir, the aquation energy of divalent inorganic cations, can be adsorbed prior to inorganic cation in clay
On grain, clay particle is promoted to deviate from intermediary water, it is suppressed that the hydration swelling of clay particle.Hydroxypropyl trimethylammonium based quaternary ammonium salt and chlorination
The synergy of potassium can make the volume-diminished of the clay particle in oil well area and its surrounding oil reservoir area, and Hydroxyproyl Trimethyl season
Ammonium salt and potassium chloride are not easily decomposed, and are not reacted with clay particle and are generated other deposits and block the hole in oil reservoir.It can be seen that
Water injection well Swelling-resistant shrinking and swelling agent provided by the invention has the characteristics of active area is big, term of validity length, harmless to oil reservoir.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention will be made into one below
It is described in detail on step ground.
In a first aspect, the embodiments of the invention provide a kind of water injection well Swelling-resistant shrinking and swelling agent, the Swelling-resistant shrinking and swelling agent includes following
The component of mass percent：Hydroxypropyl trimethylammonium based quaternary ammonium salt 6.8%-12.7%, potassium chloride 6.8%-12.7%, surplus is water.
Wherein, the chemical structural formula of hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Water injection well Swelling-resistant shrinking and swelling agent provided in an embodiment of the present invention, including the hydroxypropyl that mass percent is 6.8%-12.7%
Base trimethyl quaternary ammonium salt, 6.8%-12.7% potassium chloride, surplus are water.Wherein, the cation of hydroxypropyl trimethylammonium based quaternary ammonium salt
Group has oxidisability in oil reservoir, can loosen the lattice of the clay particle of the water containing absorption, the adsorbed hydrone of abjection, enters
And make the volume contraction of the clay particle after hydration swelling.And the water of the cation of hydroxypropyl trimethylammonium based quaternary ammonium salt and potassium chloride
Change ability is below monovalence in oil reservoir, the aquation energy of divalent inorganic cations, can be adsorbed prior to inorganic cation in clay
On grain, clay particle is promoted to deviate from intermediary water, it is suppressed that the hydration swelling of clay particle.Hydroxypropyl trimethylammonium based quaternary ammonium salt and chlorination
The synergy of potassium can make the volume-diminished of the clay particle in oil well area and its surrounding oil reservoir area, and Hydroxyproyl Trimethyl season
Ammonium salt and potassium chloride are not easily decomposed, and are not reacted with clay particle and are generated other deposits and block the hole in oil reservoir.It can be seen that
Water injection well Swelling-resistant shrinking and swelling agent provided by the invention has the characteristics of active area is big, term of validity length, harmless to oil reservoir.
Wherein, the quality hundred of the hydroxypropyl trimethylammonium based quaternary ammonium salt in water injection well Swelling-resistant shrinking and swelling agent provided in an embodiment of the present invention
Ratio is divided to account for 6.8%-12.7%, the mass percent of potassium chloride accounts for 6.8%-12.7%.This proportioning is easy to make hydroxypropyl trimethylammonium
Based quaternary ammonium salt and potassium chloride synergy reach optimal effect.For example, the mass ratio of hydroxypropyl trimethylammonium based quaternary ammonium salt
Can be 6.8%, 7.8%, 8.8%, 9.8%, 10.8%, 11.8%, 12.7% etc., the mass ratio of potassium chloride can be
6.8%th, 7.8%, 8.8%, 9.8%, 10.8%, 11.8%, 12.7% etc..
Specifically, hydroxypropyl trimethylammonium based quaternary ammonium salt is prepared via a method which to obtain：
Step 101, trimethylamine, hydrochloric acid are added in first reactor, carry out back flow reaction under agitation, cool down
To trimethylamine hydrochloride.
Step 102, trimethylamine hydrochloride, trimethylamine, epoxychloropropane, n-amyl alcohol are added in second reactor, stirred
Heating response under conditions of mixing, then reacted mixed solution is evaporated under reduced pressure, obtains hydroxypropyl trimethylammonium based quaternary ammonium salt.
Wherein, it is former come the preparation of overall expression hydroxypropyl trimethylammonium based quaternary ammonium salt using chemical equation as follows
Reason：
Understood based on above-mentioned, the preparation process of hydroxypropyl trimethylammonium based quaternary ammonium salt is simple, is easy to for preparing implementation of the present invention
The water injection well Swelling-resistant shrinking and swelling agent that example provides.And the hydroxypropyl trimethylammonium based quaternary ammonium salt being prepared easily dissociates into above-mentioned reaction
The form of two kinds of ions in equation product is learned, this is easy to the positive ion of hydroxypropyl trimethylammonium based quaternary ammonium salt to play a role, hydroxyl
The positive ion absorption of oxypropyl trimethyl quaternary ammonium salt makes clay particle abjection absorption water and intermediary water on clay particle, and then presses down
The hydration swelling of clay particle processed.
Wherein, using mass percent to count, 5%-15% trimethylamine is added in first reactor, 15%-25%'s
Mass fraction is 32%-43% hydrochloric acid.20%-40% trimethylamine hydrochloride, 5%-15% is added in second reactor
Trimethylamine, 5%-15% epoxychloropropane, 40%-60% n-amyl alcohol.The ratio of differential responses raw material is set to be easy to height
The reaction generation hydroxypropyl trimethylammonium based quaternary ammonium salt of effect, wherein, n-amyl alcohol is mainly used as reaction dissolvent, is easy to reaction to product
Direction is carried out.The front three added in the trimethylamine, the mass percent of hydrochloric acid and the second reactor that are added in first reactor
Amine, epoxychloropropane, the mass percent sum of n-amyl alcohol are 100%, wherein, trimethylamine hydrochloride is intermediate product, is disregarded
The percentage occupied for raw material, its mass percent are essentially the mass percent of trimethylamine and hydrochloric acid in first reactor
Sum.On the premise of meeting that the mass percent sum that raw material is added in first reactor and second reactor is 100%, respectively
The ratio of kind raw material can be the arbitrary value in aforementioned proportion scope.For example, 12% can be added in first reactor
Trimethylamine, 24% mass fraction be 32%-43% hydrochloric acid, in second reactor add 36% trimethylamine hydrochloride,
12% trimethylamine, 12% epoxychloropropane, 40% n-amyl alcohol etc..
Preferably, 8.3%-10.5% trimethylamine, 16.6%-21% mass fraction is added in first reactor
For 37% hydrochloric acid.24.9%-31.5% trimethylamine hydrochloride, 8.3%-10.5% front three is added in second reactor
Amine, 8.3%-10.5% epoxychloropropane, 45%-55% n-amyl alcohol.It is arranged such the quality percentage of above-mentioned different material
Ratio can further be easy to highly effective reaction to generate hydroxypropyl trimethylammonium based quaternary ammonium salt.Preferably, add in first reactor
Enter 10% trimethylamine, the hydrochloric acid that 20% mass fraction is 37%.30% trimethylamine hydrochloric acid is added in second reactor
Salt, 10% trimethylamine, 10% epoxychloropropane, 50% n-amyl alcohol.
Specifically, in a step 101, the time of back flow reaction is 4-6h, in embodiments of the present invention, because hydrochloric acid has
Certain volatility, its volatilization is caused in order to avoid it directly is carried out into heating response with other reaction raw materials, and then influenceed
The formation of reaction product, the embodiment of the present invention, which is first reacted it with part trimethylamine by the back flow reaction under closed environment, gives birth to
Into trimethylamine hydrochloride.Simultaneously volatility problem is not present in trimethylamine hydrochloride, so expectation can be generated by using it for heating response
Reaction product, and ensure reaction rate it is higher.Wherein, back flow reaction is carried out in closed environment, and the closed environment can lead to
Reactor, round-bottomed flask and condenser pipe combination back flow reaction device etc. are crossed to realize.The time for setting back flow reaction simultaneously is 4-
6h, it is ensured that trimethylamine can total overall reaction finish.For example, the time of back flow reaction could be arranged to 4h, 5h, 6h
Deng.
Specifically, in a step 102, the temperature of heating response is 30 DEG C -60 DEG C, and time 1.5-2.5h, this is easy to
Trimethylamine hydrochloride, trimethylamine, epoxychloropropane, n-amyl alcohol efficiently react generation Hydroxyproyl Trimethyl season under conditions of suitable
Ammonium salt.For example, the temperature of heating response could be arranged to 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C, 50 DEG C, 55 DEG C, 60 DEG C etc., when
Between could be arranged to 1.5h, 1.8h, 2.1h, 2.4h, 2.5h etc..Preferably, in a step 102, the temperature of heating response is
40 DEG C -50 DEG C, time 1.8h-2.2h, this is further easy to reaction highly effective reaction generation hydroxypropyl under appropriate conditions
Trimethyl quaternary ammonium salt.For example, the temperature of heating response can be 40 DEG C, 45 DEG C, 50 DEG C etc., the time can be 1.8h, 2.1h,
2.2h wait.
Second aspect, the embodiments of the invention provide the preparation method of above-mentioned water injection well Swelling-resistant shrinking and swelling agent, this method includes：
Prepare hydroxypropyl trimethylammonium based quaternary ammonium salt；By mass percentage, hydroxypropyl trimethylammonium based quaternary ammonium salt, potassium chloride are added to the water, stirred
15-30min, obtain water injection well Swelling-resistant shrinking and swelling agent.It can be seen that the preparation method technique of water injection well Swelling-resistant shrinking and swelling agent provided by the invention
Simply, it is easy to apply.Wherein, hydroxypropyl trimethylammonium based quaternary ammonium salt can be prepared by above-mentioned steps 101 and step 102, herein not
It is described in detail again.The mixing time of the preparation method of water injection well Swelling-resistant shrinking and swelling agent provided by the invention can be 15min, 20min,
25min, 30min etc..
The third aspect, the embodiments of the invention provide above-mentioned water injection well Swelling-resistant shrinking and swelling agent in oil field extracted water reinjection technology
Application.During water filling is carried out to oil well, the Swelling-resistant shrinking and swelling agent of scheduled volume is injected in pressure duct by high-pressure pump,
Swelling-resistant shrinking and swelling agent injects oil reservoir with reinjected water, and then can make the volume-diminished of the clay particle in oil well area and surrounding oil reservoir area,
Improve the permeability of oil reservoir, improve oil recovery efficiency.
Specifically, when the quality of reinjected water is 100%, the quality of used water injection well Swelling-resistant shrinking and swelling agent is 1%-
3%.It can be seen that the usage amount of water injection well Swelling-resistant shrinking and swelling agent is small, therefore on the premise of low cost, oil reservoir can be improved to play
Permeability, the effect for reducing formation pressure.For example, when the quality of reinjected water is 100%, water injection well Swelling-resistant shrinking and swelling agent
Quality can be 1%, 1.4%, 1.8%, 2.2%, 2.6%, 3% etc..
The present invention will be further described through by specific embodiment below.
In specific examples below, the unreceipted condition person of involved operation, according to normal condition or manufacturer
It is recommended that condition carry out.Raw materials used unreceipted production firm and specification person are can be by the conventional products of acquisition purchased in market.
Embodiment 1
A kind of water injection well Swelling-resistant shrinking and swelling agent is present embodiments provided, includes the component of following mass percent：Hydroxypropyl three
Methyl quaternary ammonium 8.3%, potassium chloride 8.3%, surplus are water.
Wherein, the chemical structural formula of hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Using mass percent to count, above-mentioned water injection well Swelling-resistant shrinking and swelling agent can be prepared via a method which to obtain：
8.3% trimethylamine, the hydrochloric acid that 18.6% mass fraction is 37% are added in first reactor, in stirring bar
Back flow reaction 4h is carried out under part, cooling obtains 26.9% trimethylamine hydrochloride；The three of 26.9% are added in second reactor
Methylamine hydrochloride, 8.3% trimethylamine, 8.3% epoxychloropropane, 56.5% n-amyl alcohol, are heated under conditions of stirring
1.5h is reacted, heating-up temperature is 30 DEG C, and then reacted mixed solution is evaporated under reduced pressure, obtains Hydroxyproyl Trimethyl season
Ammonium salt.Then 8.3% hydroxypropyl trimethylammonium based quaternary ammonium salt, 8.3% potassium chloride are added to the water, stir 15min, obtain water filling
Well Swelling-resistant shrinking and swelling agent.
The effect of the water injection well Swelling-resistant shrinking and swelling agent provided the present embodiment is tested：70-295 wells are being stayed using high-pressure pump
The middle mass percent that adds accounts for the water injection well Swelling-resistant shrinking and swelling agent that the present embodiment of re-injection water quality 1% provides.After 24h, well is measured
The pressure of mouth is down to 17.5MPa by original 33MPa, and daily water-injection rate is by 7m3Increase to 30m3。
Embodiment 2
A kind of water injection well Swelling-resistant shrinking and swelling agent is present embodiments provided, includes the component of following mass percent：Hydroxypropyl three
Methyl quaternary ammonium 9.6%, potassium chloride 9.6%, surplus are water.
Wherein, the chemical structural formula of hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Using mass percent to count, above-mentioned water injection well Swelling-resistant shrinking and swelling agent can be prepared via a method which to obtain：
9.6% trimethylamine, the hydrochloric acid that 19.2% mass fraction is 37% are added in first reactor, in stirring bar
Back flow reaction 4h is carried out under part, cooling obtains 28.8% trimethylamine hydrochloride；The three of 28.8% are added in second reactor
Methylamine hydrochloride, 9.6% trimethylamine, 9.6% epoxychloropropane, 52% n-amyl alcohol, heated under conditions of stirring anti-
1.8h is answered, heating-up temperature is 33 DEG C, and then reacted mixed solution is evaporated under reduced pressure, obtains Hydroxyproyl Trimethyl quaternary ammonium
Salt.Then 9.6% hydroxypropyl trimethylammonium based quaternary ammonium salt, 9.6% potassium chloride are added to the water, stir 18min, obtain water injection well
Swelling-resistant shrinking and swelling agent.
The effect of the water injection well Swelling-resistant shrinking and swelling agent provided the present embodiment is tested：Added using high-pressure pump in western 47 wells
Enter mass percent and account for the water injection well Swelling-resistant shrinking and swelling agent that the present embodiment of re-injection water quality 1.4% provides.After 24h, well head is measured
Pressure 15MPa is down to by original 32MPa, daily water-injection rate is by 0m3Increase to 23m3。
Embodiment 3
A kind of water injection well Swelling-resistant shrinking and swelling agent is present embodiments provided, includes the component of following mass percent：Hydroxypropyl three
Methyl quaternary ammonium 10.5%, potassium chloride 10.5%, surplus are water.
Wherein, the chemical structural formula of hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Using mass percent to count, above-mentioned water injection well Swelling-resistant shrinking and swelling agent can be prepared via a method which to obtain：
10.5% trimethylamine, the hydrochloric acid that 21% mass fraction is 37% are added in first reactor, in stirring bar
Back flow reaction 4h is carried out under part, cooling obtains 31.5% trimethylamine hydrochloride；The three of 31.5% are added in second reactor
Methylamine hydrochloride, 10.5% trimethylamine, 10.5% epoxychloropropane, 47.5% n-amyl alcohol, add under conditions of stirring
Thermal response 2.1h, heating-up temperature are 36 DEG C, and then reacted mixed solution is evaporated under reduced pressure, obtains Hydroxyproyl Trimethyl
Quaternary ammonium salt.Then 10.5% hydroxypropyl trimethylammonium based quaternary ammonium salt, 10.5% potassium chloride are added to the water, stir 21min, obtain
Water injection well Swelling-resistant shrinking and swelling agent.
The effect of the water injection well Swelling-resistant shrinking and swelling agent provided the present embodiment is tested：Using high-pressure pump in paulownia 47-7X wells
The middle mass percent that adds accounts for the water injection well Swelling-resistant shrinking and swelling agent that the present embodiment of re-injection water quality 1.8% provides.After 24h, measure
The pressure of well head is down to 15MPa by original 28MPa, and daily water-injection rate is by 10m3Increase to 39m3。
Embodiment 4
A kind of water injection well Swelling-resistant shrinking and swelling agent is present embodiments provided, includes the component of following mass percent：Hydroxypropyl three
Methyl quaternary ammonium 8.5%, potassium chloride 11.3%, surplus are water.
Wherein, the chemical structural formula of hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
Using mass percent to count, above-mentioned water injection well Swelling-resistant shrinking and swelling agent can be prepared via a method which to obtain：
8.5% trimethylamine, the hydrochloric acid that 17% mass fraction is 37% are added in first reactor, in stirring condition
Lower progress back flow reaction 4h, cooling obtain 25.5% trimethylamine hydrochloride；25.5% front three is added in second reactor
Amine hydrochlorate, 8.5% trimethylamine, 8.5% epoxychloropropane, 57.5% n-amyl alcohol, heated under conditions of stirring anti-
2.3h is answered, heating-up temperature is 40 DEG C, and then reacted mixed solution is evaporated under reduced pressure, obtains Hydroxyproyl Trimethyl quaternary ammonium
Salt.Then 8.5% hydroxypropyl trimethylammonium based quaternary ammonium salt, 11.3% potassium chloride are added to the water, stir 25min, obtain water filling
Well Swelling-resistant shrinking and swelling agent.
The effect of the water injection well Swelling-resistant shrinking and swelling agent provided the present embodiment is tested：Using high-pressure pump in spring 281-1X wells
The middle mass percent that adds accounts for the water injection well Swelling-resistant shrinking and swelling agent that the present embodiment of re-injection water quality 2% provides.After 24h, well is measured
The pressure of mouth is down to 16.3MPa by original 28.5MPa, and daily water-injection rate is by 6m3Increase to 35m3。
Presently preferred embodiments of the present invention is the foregoing is only, the protection domain being not intended to limit the invention is all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (10)
1. a kind of water injection well Swelling-resistant shrinking and swelling agent, it is characterised in that the Swelling-resistant shrinking and swelling agent includes the component of following mass percent：
Hydroxypropyl trimethylammonium based quaternary ammonium salt 6.8%-12.7%, potassium chloride 6.8%-12.7%, surplus is water；
Wherein, the chemical structural formula of the hydroxypropyl trimethylammonium based quaternary ammonium salt is as follows：
2. water injection well Swelling-resistant shrinking and swelling agent according to claim 1, it is characterised in that the hydroxypropyl trimethylammonium based quaternary ammonium salt leads to
Following method is crossed to be prepared：
Step a, trimethylamine, hydrochloric acid are added in first reactor, carries out back flow reaction under agitation, cooling obtains front three
Amine hydrochlorate；
Step b, the trimethylamine hydrochloride, trimethylamine, epoxychloropropane, n-amyl alcohol are added in second reactor, is being stirred
Under conditions of heating response, then reacted mixed solution is evaporated under reduced pressure, obtains the Hydroxyproyl Trimethyl quaternary ammonium
Salt；
Wherein, using mass percent to count, the 5%-15% trimethylamine, 15%- are added in the first reactor
25% mass fraction is the 32%-43% hydrochloric acid；
Added in the second reactor 20%-40% trimethylamine hydrochloride, 5%-15% the trimethylamine,
The 5%-15% epoxychloropropane, the 40%-60% n-amyl alcohol.
3. water injection well Swelling-resistant shrinking and swelling agent according to claim 2, it is characterised in that the time of the back flow reaction is 4-
6h。
4. water injection well Swelling-resistant shrinking and swelling agent according to claim 2, it is characterised in that the temperature of the heating response is 30
DEG C -60 DEG C, time 1.5-2.5h.
5. water injection well Swelling-resistant shrinking and swelling agent according to claim 4, it is characterised in that the temperature of the heating response is 40
DEG C -50 DEG C, time 1.8h-2.2h.
6. water injection well Swelling-resistant shrinking and swelling agent according to claim 2, it is characterised in that added in the first reactor
The 8.3%-10.5% trimethylamine, the hydrochloric acid that 16.6%-21% mass fraction is 37%.
7. water injection well Swelling-resistant shrinking and swelling agent according to claim 6, it is characterised in that added in the second reactor
The 24.9%-31.5% trimethylamine hydrochloride, the 8.3%-10.5% trimethylamine, the 8.3%-10.5% ring
The n-amyl alcohol of oxygen chloropropane, 45%-55%.
8. the preparation method of the water injection well Swelling-resistant shrinking and swelling agent described in claim any one of 1-7, it is characterised in that methods described bag
Include：
Prepare hydroxypropyl trimethylammonium based quaternary ammonium salt；
By mass percentage, the hydroxypropyl trimethylammonium based quaternary ammonium salt, potassium chloride are added to the water, stir 15-30min, obtain institute
State water injection well Swelling-resistant shrinking and swelling agent.
9. application of the water injection well Swelling-resistant shrinking and swelling agent in oil field extracted water reinjection technology described in claim 1.
10. application according to claim 9, it is characterised in that when the quality of reinjected water is 100%, used note
The quality of well Swelling-resistant shrinking and swelling agent is 1%-3%.
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| CN201610364965.8A CN107434971A (en) | 2016-05-27 | 2016-05-27 | A kind of water injection well Swelling-resistant shrinking and swelling agent and its preparation method and application |
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| CN201610364965.8A CN107434971A (en) | 2016-05-27 | 2016-05-27 | A kind of water injection well Swelling-resistant shrinking and swelling agent and its preparation method and application |
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| CN201610364965.8A Pending CN107434971A (en) | 2016-05-27 | 2016-05-27 | A kind of water injection well Swelling-resistant shrinking and swelling agent and its preparation method and application |
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| CN108715755A (en) * | 2018-06-27 | 2018-10-30 | 长江大学 | A kind of Swelling-resistant shrinking and swelling agent and preparation method thereof |
| CN110885293A (en) * | 2019-12-12 | 2020-03-17 | 东营市泽澳化工有限责任公司 | Synthesis method of biquaternary ammonium salt |
| CN110964493A (en) * | 2019-12-16 | 2020-04-07 | 成都碧隆双田化工科技有限公司 | Clay stabilizer for oil field |
| CN113403046A (en) * | 2021-05-12 | 2021-09-17 | 中国石油大学(华东) | Shrinkage-expansion agent for preventing borehole wall instability in oil extraction and drilling processes of high-argillaceous oil reservoirs and preparation method thereof |
| CN115636751A (en) * | 2022-06-14 | 2023-01-24 | 山东一飞药业股份有限公司 | Production process of trimethylamine hydrochloride |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108715755A (en) * | 2018-06-27 | 2018-10-30 | 长江大学 | A kind of Swelling-resistant shrinking and swelling agent and preparation method thereof |
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| CN110964493A (en) * | 2019-12-16 | 2020-04-07 | 成都碧隆双田化工科技有限公司 | Clay stabilizer for oil field |
| CN113403046A (en) * | 2021-05-12 | 2021-09-17 | 中国石油大学(华东) | Shrinkage-expansion agent for preventing borehole wall instability in oil extraction and drilling processes of high-argillaceous oil reservoirs and preparation method thereof |
| CN113403046B (en) * | 2021-05-12 | 2023-01-06 | 中国石油大学(华东) | Shrinkage-expansion agent for preventing borehole wall instability in oil production and drilling processes of high-argillaceous oil reservoirs and preparation method of shrinkage-expansion agent |
| CN115636751A (en) * | 2022-06-14 | 2023-01-24 | 山东一飞药业股份有限公司 | Production process of trimethylamine hydrochloride |
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Application publication date: 20171205 |